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MCQs in Active Filters

Multiple Choice Questions in Active Filters from the book Electronic Principles by Albert Malvino. Make sure to familiarize each and every questions

This is the Multiple Choice Questions in Chapter 21: Active Filters from the book Electronic Principles 7th Edition by Albert Malvino. If you are looking for a reviewer in Electronics Engineering this will definitely help. I can assure you that this will be a great help in reviewing the book in preparation for your Board Exam. Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam.

Topic Outline

MCQs in Ideal Responses

MCQs in Approximate Response

MCQs in Passive Filters

MCQs in First-Order stages

MCQs in VCVS Unity-Gain Second Order Low-Pass Filters

MCQs in Higher-Order Filters

MCQs in VCVS Equal-component Low-Pass Filters

MCQs in VCVS High-Pass Filters

MCQs in MFB Bandpass Filters

MCQs in Bandstop Filters

MCQs in All-Pass Filters

MCQs in Biquadratic and State-Variable Filters

Begin and Good luck!

Choose the letter of the best answer in each questions.

1. The region between the passband and the stopband is called the

a. Attenuation

b. Center

c. Transition

d. Ripple

2. The center frequency of a bandpass filter is always equal to

a. The bandwidth

b. Geometric average of the cutoff frequencies

c. Bandwidth divided by Q

d. 3-dB frequency

3. The Q of a narrowband filter is always

a. small

b. equal to BW divided by f0

c. less than 1

d. greater than 1

4. A bandstop filter is sometimes called a

a. Snubber

b. Phase shifter

c. Notch filter

d. Time-delay circuit

5. The all-pass filter has

a. No passband

b. One stopband

c. the same gain at all frequencies

d. a fast roll-off above cutoff

6. The approximation with a maximally-flat passband is

a. Chebyshev

b. Inverse Chebyshev

c. Elliptic

d. Bessel

7. The approximation with a rippled passband is

a. Butterworth

b. Inverse Chebyshev

c. Elliptic

d. Bessel

8. The approximation that distorts digital signals the least is the

a. Butterworth

b. Chebyshev

c. Elliptic

d. Bessel

9. If a filter has six second order stages and one first-order stage, the order is

a. 2

b. 6

c. 7

d. 13

10. If a Butterworth filter has 9 second-order stages, its roll-off rate is

a. 20 dB per decade

b. 40 dB per decade

c. 180 dB per decade

d. 360 dB per decade

11. If n = 10, the approximation with the fastest roll-off in the transition region is

a. Butterworth

b. Chebyshev

c. Inverse Chebyshev

d. Elliptic

12. The elliptic approximation has a

a. Slow roll-off rate compared to the Cauer

b. Rippled stopband

c. Maximally-flat passband

d. Monotonic stopband

13. Linear phase shift is equivalent to

a. Q = 0.707

b. Maximally-flat stopband

c. Constant time delay

d. Rippled passband

14. The filter with the slowest roll-off rate is the

a. Butterworth

b. Chebyshev

c. Elliptic

d. Bessel

15. A first-order active-filter stage has

a. One capacitor

b. Two op amps

c. Three resistors

d. a high Q

16. A first-order stage cannot have a

a. Butterworth response

b. Chebyshev response

c. Maximally-flat passband

d. Rolloff rate of 20 dB per decade

17. Sallen-Key filters are also called

a. VCVS filters

b. MFB filters

c. Biquadratic filters

d. State-variable filters

18. To build a 10th-order filter, we should cascade

a. 10 first-stage stages

b. 5 second-order stages

c. 3 third-order stages

d. 2 fourth-order stages

19. To get a Butterworth response with an 8th-order filter, the stages need to have

a. Equal Q's

b. Unequal center frequencies

c. Inductors

d. Staggered Q's

20. To get a Chebyshev response with a 12th-order filter, the stages need to have